Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe049d2e248f926f249aaf385eaa1e67caa99fe71133f32ccf0acfed8fbbc9b3' 
  AND token = 'DaQIpPeSJiPH2Bq9QK5eL7b2F1JGhRCy81MiE70S/iY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}